FastNetMon Community Edition up to 1.2.9 buffer overflow

Summaryinfo

A vulnerability classified as critical has been found in FastNetMon Community Edition up to 1.2.9. This affects an unknown function. This manipulation causes buffer overflow. This vulnerability is handled as CVE-2026-48696. There is not any exploit available.

Detailsinfo

A vulnerability has been found in FastNetMon Community Edition up to 1.2.9 and classified as critical. Affected by this vulnerability is some unknown processing. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

FastNetMon Community Edition through 1.2.9 has a buffer overflow, a different vulnerability than CVE-2026-48686 and CVE-2026-48689.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-48696 since 05/22/2026. The exploitation appears to be easy. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/26/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• FastNetMon

Name

• Community Edition

Version

• 1.2.0
• 1.2.1
• 1.2.2
• 1.2.3
• 1.2.4
• 1.2.5
• 1.2.6
• 1.2.7
• 1.2.8
• 1.2.9

CPE 2.3info

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CPE 2.2info

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Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

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